Mentioned this before, but I know some conservatives who said they would vote for Biden in November. They were so confident Biden would be the nominee. But so far, it looks like Biden's campaign is hitting the skids. So I don't know what they'll do if a rabid socialist/communist like Sanders, Buttigieg or one of the others ends up as nominee. Would they vote for one of those?
I could not vote for any Democrat - even a supposed centrist like Biden -- because the party has moved so far left, even if Biden were to win as a so-called moderate, as president, he would be compelled to take up the party's socialist/communist mantle. The party's stated philosophy on all the issues is so counter to what the Founding Fathers envisioned, there is no way I could vote for any Democrat for any reason.
In my view, if any conservative votes for a socialist/communist for any reason, then he or she is no longer a conservative.